Car-brake.



No. 802,287. PATENTED OUT. 17, 1905. A. J HIX.

CAR BRAKE.

APPLICATION FILED MAY10.1905.

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GAR BRAKE.

APPLICATION FILED MAYIO. 1905.

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CAR-BRAKE.

Specification of Letters Iatont.

Patented Oct. 17, 19J5.

Application filed May 10,1905. Serial No. 259,748.

To (07/7, lull/077'], it warty concern:

Be it known that LANDREW J. HIX,acitiZen of the United States of America, residing at Edgarton, in the county of Mingo and State of West Virginia, have invented new and useful Improvements in Car-Brakes, of which the following is a specification.

This invention relates to brakes designed especially for use upon mining-cars, and has for its objects to produce a comparatively simple inexpensive device of this character wherein a pair of brake members or shoes disposed, respectively, at opposite sides of the car will be simultaneously moved into braking or non-braking position, one wherein the connecting members or links may be readily adjusted for compensating for wear upon'the brake-shoes, and one in which a single operating-lever serves as a common means for actuating the pair of brake'shoes.

With these and other objects in view the invention comprises the novel features of construction and combination of parts more fully hereinafter described.

In the accompanying drawings, Figure 1 is a side elevation of a car equipped with a brake embodying the invention. Fig. 2 is a similar view looking from the opposite side. Fig. 3 is an end elevation of the car, showing the brake-operating mechanism. Fig. 1 is a perspective view of one of the brake-shafts. Fig. 5 is a similar view of the other brakeshaft.

Referring to the drawings, 1 designates a mine-car of the usual or any approved construction and material equipped with wheels 2 of ordinary form, said wheels being disposed in pairs at opposite sides of the car.

Arranged above each pair of wheels is a brake block or shoe 3, designed for engagement or non-engagement with said wheels, the shoe at one side of the car being pivotally suspended from a crank-arm 4 at one end of a rotary brake-shaft 5, having at its other end a pair of crank-arms 6, while the shoe at the other side of the car is likewise pivotally suspended from a crank-arm 7, carried atone end of a rotary brake-shaft 8, provided adjacent its other end with a second crank-arm 9, attention being directed to the fact that the arms 4. and 7, which normally extend horizontally outward from the sides of the car, are disposed at right angles to thearms 6 and 9 for a purpose which will hereinafter ap- The shafts 5 and 8 are each journaled pear.

in suitable bearings 10, attached to the sides of the car, while the shaft 8 is further journaled in a bearing 11, arising vertically from the adjacent end platform of the car, there being journaled upon the shaft 8, between the crank-arm 9 and bearing 11, an operating-lever 12, having a normally vertical depending arm or portion 13, to the lower end of which is pivoted one end of a rigid connecting element or link 14, having its other end pivotally connected with the outer end of one of the arms 6 of shaft 5, while pivoted to the outer end of the other arm 6 is a similar connecting element or link 15, in turn pivotally connected at its other end with the outer end of crank-arm 9 on shaft 8, it being noted that each of the elements 1415 is composed of a pair of sections adjustably connected by means of a turnbuckle 16.

Attached to the platform 17 of the car is a vertical frame 18, carrying a vertical rack 19, with the teeth 20 of which the lever 12 may be engaged for maintaining the shoes 3 in braking or non-braking position, while at the upper end of said rack is a recess or seat 21, designed to normally receive the end of the lever for maintaining the shoes in elevated position and out of engagement with the wheels.

In practice when the parts are in normal non-braking position, as illustrated in Figs. 1, 2, and 3, the crank-arms 4.- and T will lie in horizontal position and the arms 6 and 9 in vertical position. \Vhen, however, the brakes are to be applied, the free end of lever 12 is forced vertically downward and through the medium of its arm 13 moves the link 1a in the direction indicated by the arrow in Fig. 3, thus rocking the shaft 5 and swinging the crank-arm 4 downward for moving the adjacent brake-shoe 3 into engagement with the underlying wheels 2, while at the same time the upwardly-extending crank-arm 6 moves the element 15 in the direction indicated by the arrow in Fig. 3 and through the medium of crank-arm 9 rocks shaft 8 in a direction for swinging crank-arm 7 downward to force the brake-shoe 3, carried thereby, into ongagement with the undcn'lying wheels 2. It is to be observed in this connection that the single lever12 serves as a connnon means for simultaneously operating both shoes through the medium of the connecting elements 1 1- 15 and, further, that owing to the elements being each composed of a pair of sections connected by a turnbuckle 16 the elements may be readily adjusted to compensate for wear upon the brake-shoes.

From the foregoing it is apparent that I produce a comparatively simple inexpensive braking mechanism in which a pair of brakeshoes will be simultaneously operated by a common lever and one wherein wear upon the parts may be readily compensated for, it being understood that in attaining these ends minor changes in the details herein set forth may be resorted to without departing from the spirit of the invention.

Having thus described the invention, what I claim is- 1. In a braking mechanism, a pair of rockshafts provided with crank arms, brakeshoes carried by said arms, an operating-lever pivoted on one of the shafts, and operative connections between the lever and both shafts for simultaneously rocking the latter to move the shoes.

2. In a braking mechanism, a pair of rockshafts provided with crank arms, brakeshoes carried by said arms, an operatinglever pivoted on one of the shafts, a link connection between the lever and other shaft, and a link connection between the shafts whereby actuation of the lever serves to rock both shafts for simultaneously moving the shoes.

3. In a braking mechanism, a pair of rockshafts, brake shoes operatively connected with said shafts, an operating-lever pivoted on one of the shafts, operative connections between the lever and other shaft, operative connections between the pair of shafts, and means included in said connections for taking up Wear on the brake-shoes.

L. In a braking mechanism, a pair of rockshafts provided with crank arms, brakeshoes operatively connected with said shafts, an operating-lever pivoted on one of the shafts and having a crank-arm, a rigid element connecting said arm with a crank-arm on the other shaft and a rigid element connecting a second crank-arm on said shaft with a crankarm on the other shaft. 7

5. A braking mechanism including a pair of rock-shafts operatively connected for simultaneous movement, brake shoes operatively connected with the shafts, and an operating-lever pivoted on one of the shafts andhaving a crank-arm connected with the other shaft.

6. A braking mechanism including a pair of rock-shafts operatively connected for simultaneous movement, brake-shoes carried and operable by the shafts, and an operatinglever pivoted on one of the shafts and operatively connected with the other.

In testimony whereof I aflix my signature in presence of two witnesses.

ANDREW J. HIX.

Vitnesses:

N. baron, J. 0. ROGERS. 

